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Complex modulation Diffractive Optical Elements implemented in a single Spatial Light Modulator
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DOI：10.1016/j.optlaseng.2025.109184.png)
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Abstract
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• Complex modulation DOEs are obtained using a single-pass SLM operation. • An evenly filling of the Argand plane with the modulation curve of the SLM enhances the efficiency of complex DOEs. • A modified Iterative Fourier Transform Algorithm is developed for the design of complex DOEs. • Experiments show an 85% reduction in background noise using a complex DOE over a pure-phase DOE. • The diffraction efficiency increases up to 30% with complex DOEs compared with pure-phase DOEs.
Keywords:
Spatial Light Modulators
Complex modulation
Distance-based iterative Fourier transform algorithm
Far-field diffraction
Diffractive Optical Elements
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